Thousands of people line up underneath the Polish national flag near the Presidential Palace in Warsaw, Thursday, April 15, 2010, to pay tribute at the coffins of President Kaczynski and his wife in the presidential palace.President Lech Kaczynski and his wife who was killed in a plane crash in Russia is going to be buried in Wawel castle in Krakow on Sunday. (AP Photo/Markus Schreiber)